Eka-Superiors were a weird alien race not from Earth appearing in the Rig-Veda. They colonized Latvia, taught everyone Sanskrit, and cut off people's ears in unethical medical experimentation. They are today known as the "Grey Jedi." Some say they are the ones who made us.
Eka-Superior DNA is very weird, as it contains seven bases. Their RNA is even weirder, as 9 bases are possible although only 8 are believed to be used to produce messenger gene transcripts. Skeptics, on the other hand, claim that the chemists were high on marijuana and just made this up. That is very plausible. However, as the chemists are the only ones who get funding, we will just have to take their word for it.
Anthropologists refuse to study them.